The PneuTools WS1650B is an Industrial Grade Bostich Style Wide Crown Stapler for Asphalt Shingling, Stucco Wire, and Truss Stitching applications. • The PneuTools WS1650B Wide Crown Stapler uses 3/4 - 2 16 Gauge, Bostich Style Staples with a 1 Crown. • This stapler?s industrial strength, light-weight die cast housing, and ergonomically designed rubber handle, means comfort and consistent ease of use on every job. • It comes with a Quick Clear Door for removing staple jams simply and efficiently, so you can get back on the job in no time. • It also features a Bump Fire Trigger, an Adjustable Depth Work Contact Element, and a High Capacity, Easy Load Magazine.